1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 #ifndef _ASMRISCV_TIMER_H_ 3 #define _ASMRISCV_TIMER_H_ 4 5 #include <asm/csr.h> 6 7 extern void timer_get_frequency(void); 8 extern void timer_start(unsigned long duration_us); 9 extern void timer_stop(void); 10 11 static inline uint64_t timer_get_cycles(void) 12 { 13 return csr_read(CSR_TIME); 14 } 15 16 static inline void timer_irq_enable(void) 17 { 18 csr_set(CSR_SIE, IE_TIE); 19 } 20 21 static inline void timer_irq_disable(void) 22 { 23 csr_clear(CSR_SIE, IE_TIE); 24 } 25 26 #endif /* _ASMRISCV_TIMER_H_ */ 27